Lovely composition in 1 and 3, but 2 is let down by the rocks at the bottom. You have tried too hard to bring out detail and colour when you didn’t need to. I would just crop them out.
Steve makes some excellant points and I agree with them. The rocks in #2 would be better more into the picture or taken out completely. That said, composition elsewhere is spot on; exposure, DoF, colour and lighting are great.